Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f568e2b79401036…

MALICIOUS

PDF

74.2 KB Created: 2021-09-06 15:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a0dc6779a4be3add0cece1eea2e2c6c6 SHA-1: 8d047cd1f22670fbe8351170337d65c90f043d66 SHA-256: 7f568e2b79401036744bda494ed8765022a0bf63b360f1d0b724aedf01a79efb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many pointing to compromised WordPress sites, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL heuristics point to a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bbd61c6248c---lanobuz.pdf In PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b89a538d4cc---97606958961.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9d5215407---88511548311.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/vjp5ct3p3s8esbs4dp3ve9tj53/22353786102.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/sg3o050gv6buhibcpg5ns29l7v/97772000563.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f7a515361---35015069225.pdfIn PDF document text
    • http://seibyou-koujien.com/files/files/24299658684.pdfIn PDF document text
    • http://playitdirect.ca/ckfinder/uploadfiles/files/wujatalufel.pdfIn PDF document text
    • http://posekatzahradu.cz/files/file/1024818814.pdfIn PDF document text
    • http://lsneotek.com/ckupload/files/xepabijumidi.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160f6a62431270---90352380758.pdfIn PDF document text
    • http://qkmedica.com/uploads/userfiles/file/50388141232.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/liruvixujabowuj.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/f4d69e9943e32d2e589a71f629a9d507/89991386322.pdfIn PDF document text
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/d51c7b8bd5d64b1244c6d682ef762c3a/66382827891.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16091c5bbd66ac---felixufa.pdfIn PDF document text
    • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/xegisemizuvemuruvi.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/d03e12ebb41b1318e1a4ba876bf8533b/99708762870.pdfIn PDF document text
    • https://groupunsur1.com/contents//files/zalapesikagukapolidizof.pdfIn PDF document text
    • https://akamercedes.com/images/uploads/files/jipikaku.pdfIn PDF document text
    • http://opuspoint.com/ckfinder/userfiles/files/maxuxuxen.pdfIn PDF document text
    • https://emotionalgift.youngzonejewelry.com/ckfinder/userfiles/files/jelugejisik.pdfIn PDF document text
    • http://meetburgerusa.com/uploads/files/mesavonarobim.pdfIn PDF document text
    • http://tfforming.ru/d/files/89062606449.pdfIn PDF document text
    • http://vandervalk.reviews/app/webroot/files/userfiles/files/bosojatexuxalisu.pdfIn PDF document text
    • https://blindnow.com/userfiles/file/dudanojunilenewif.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=hbse+previous+year+question+papers+class+10+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bbef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBEF 11344 bytes
SHA-256: eb25ddf3eabf6ce4598115501a122be076851454e257e33c4986d7b62ed0f3ca
font_01_sfnt_off0000d65d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65D 17396 bytes
SHA-256: dc6120fa2b593be25702e484bd8567008bbf6f31cdfc7fe6d2b2bb4ef6d09822
font_02_sfnt_off000102f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.